<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head>
    <meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
    <title></title>
    <style>
        #container {
            margin-top: 200px;
        }
    </style>
</head>

<body>
 <div id="container">

 </div>

</body>
<script src="test.js"></script>
<script>
 new Menu ({
  container: document.querySelector('#container'),
  data: ['a', 'b', 'c', 'd', 'e', 'f', 'g']
})
</script>